US6201903B1 - Method and apparatus for pen-based faxing - Google Patents
Method and apparatus for pen-based faxing Download PDFInfo
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- US6201903B1 US6201903B1 US08/940,832 US94083297A US6201903B1 US 6201903 B1 US6201903 B1 US 6201903B1 US 94083297 A US94083297 A US 94083297A US 6201903 B1 US6201903 B1 US 6201903B1
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- Prior art keywords
- pen
- strokes
- message
- sensing
- facsimile
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/0035—User-machine interface; Control console
- H04N1/00352—Input means
- H04N1/00392—Other manual input means, e.g. digitisers or writing tablets
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/32—Digital ink
- G06V30/333—Preprocessing; Feature extraction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00326—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a data reading, recognizing or recording apparatus, e.g. with a bar-code apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00204—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00204—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server
- H04N1/00206—Transmitting or receiving computer data via an image communication device, e.g. a facsimile transceiver
Definitions
- the present invention relates to sending messages via facsimile (fax), and more specifically, to sending fax messages via a pen-like device.
- sending messages via facsimile requires the sender to compose a message and write information on a cover sheet to be sent along with the message. Then the user must locate a fax machine, feed the message and the cover sheet into the fax machine and dial the number of the receiving party. The user may be required to then wait for the message to be sent to confirm that the message was sent successfully.
- fax facsimile
- a fax machine is not portable. When a person desires to send a fax, that person must travel to the nearest fax machine. This travel time added to the process may be inconvenient, particularly if the individual does not currently know where such a fax machine may be.
- Elimination of any of the required steps would make the process of communicating via fax more convenient and efficient. Therefore, it would be desirable to provide faxing that requires a user only to perform a subset of these steps to send a fax. Furthermore, it would be desirable to eliminate the inconvenience associated with locating and traveling to a fax machine.
- a method and apparatus for sending a facsimile of a message is disclosed.
- the present invention provides for recording pen strokes that set forth a message and sending the recorded pen strokes as part of a facsimile.
- FIG. 1 is one embodiment of a pen-based device for faxing messages according to the present invention.
- FIG. 2 is a block diagram of one embodiment of the position sensing system in a pen-based faxing system according to the present invention.
- FIG. 3 is a block diagram of one embodiment of base unit 160 according to the present invention.
- FIG. 4 illustrates external sources and their coverage in one embodiment of an infrared (IR) tracking system of a pen-based faxing system according to the present invention.
- IR infrared
- FIG. 5 is a data flow diagram for the pen-based faxing of the present invention.
- FIG. 6 is a flow diagram of one embodiment for faxing a message with a pen-based faxing system according to the present invention.
- FIG. 7 illustrates an exemplary fax.
- FIG. 8 is a flow diagram of one embodiment for using a pen-based faxing system according to the present invention.
- FIG. 9 is a flow diagram of one embodiment for processing strokes of a pen-based faxing device according to the present invention.
- the present invention provides for using a smart sensing device, such as a specially designed pen or stylus, to send facsimile (fax) or other electronic telecommunication transmissions.
- a smart sensing device such as a specially designed pen or stylus
- the device is portable.
- the device records stroke information.
- users simply write down a message on an ordinary piece of paper and the system transparently delivers the message via some mode of communication.
- facsimile transmissions are sent by initially writing a “fax” command (such as writing “TO:”) that the pen-like device recognizes followed by an indication of the recipient.
- a user writes down a message on a piece of paper or any surface.
- the present invention operates by recognizing a start, or “fax”, command and recording the user's strokes with the pen-like device. The user indicates that he/she is finished writing down the message. In one embodiment, the user may provide this indication by writing a stop, or “end of fax”, command.
- the user may indicate this by manipulating the pen-like device, such as by, for example, depressing a button, flipping a switch, controlling an input device on the pen-like device, or moving the device in a predetermined manner (e.g., twisting, turning, shaking, etc.).
- the system of the present invention automatically sends the message (e.g., document) whenever the communications medium becomes available.
- the finished indication provided by the user may cause a fax machine to be contacted and the user's message to be sent.
- a rasterized version of the user's message is sent. Such a rasterized version may be created by converting strokes of the device into a bitmap.
- a document may be sent via fax without a traditional fax machine.
- the device used by the present invention makes it very easy to send messages at anytime from any place without the need for bulky equipment.
- the present invention may be applicable to sending messages to other telecom mediums, such as by electronic mail (e.g., email).
- the present invention provides for sending handwritten messages electronically (e.g., via fax) in a very efficient manner.
- the following provides a description of methods and apparatus for recording pen movements, recognizing start, stop and destination specifications, communicating electronically, and storing strokes and converting strokes into bitmaps. These may be performed by hardware, software or a combination of both.
- the present invention may be performed with any pen or stylus like device that electronically records strokes.
- the device may record and process the strokes itself or by using some base unit that receives data from the pen.
- the device includes communications facilities for communication with other electronic devices.
- this may be any of several well-known communications mechanisms, such as an RJ11 jack that connects to the phone system, a wireless (e.g., infrared) link, or a cellular modem.
- RJ11 jack that connects to the phone system
- wireless link e.g., infrared
- cellular modem e.g., GSM
- Other well-known communications mechanisms may be used.
- a pen-based faxing system comprises a pen device and a base unit that functions as a communications interface.
- the pen contains a receiver/transmitter for transmitting position information and for receiving feedback from the base unit.
- the pen also includes position sensors, such as gyroscopes or infrared sensors or transmitters, and strain gauges or accelerometers for determining when strokes are being made by a user.
- Position information may be processed into strokes and transmitted in facsimile or other electronically compatible format either by the pen in one embodiment or by the base unit in one embodiment.
- a user may write a message on a piece of paper using a pen and the message is transmitted via facsimile to a designated recipient.
- FIG. 1 is one embodiment of pen 10 for faxing messages according to the present invention.
- the lower portion of pen 10 comprises strain gauges 100 , ink (or other writing substance) supply 110 , fine position sensors 170 and pen tip 180 , while the upper portion comprises gyroscopes 120 , battery 130 , transmitter/receiver 140 and a display 150 (e.g., a light emitting diode (LED), liquid crystal display (LCD), etc.).
- a display 150 e.g., a light emitting diode (LED), liquid crystal display (LCD), etc.
- Pen tip 180 and ink supply 110 allow the user to write a message as he or she normally writes on a piece of paper (or other surface). Recording the message on paper 190 is not necessary to send a fax; therefore, no ink supply is necessary. However, doing so provides the user with a copy of the message sent for his or her records.
- gyroscopes 120 , fine position sensors 170 and strain gauges 100 monitor the strokes being made to record the message written in the form of a series of strokes.
- Data from gyroscopes 120 , fine position sensors 170 and strain gauges 100 are transmitted to base unit 160 via transmitter/receiver 140 .
- the data from gyroscopes 120 , fine position sensors 170 and strain gauges 100 may be processed and stored in pen 10 .
- strain gauges 100 may be replaced with accelerometers.
- pen 10 and base unit 160 may provide handwriting recognition.
- the message sent may appear as if it had been printed by a computer or typed on a typewriter.
- LCD 150 may provide user feedback to indicate the results of the recognition.
- Transmitter/receiver 140 may also receive information from base unit 160 . This information may be used internally or may provide feedback to the user via display 150 . Battery 130 supplies power to the elements of pen 10 .
- FIG. 2 is a block diagram of one embodiment of the position sensing system in a pen-based faxing system according to the present invention.
- Fine position sensors 170 , gyroscopes 120 and strain gauges 100 generate inputs to multiplexer 210 .
- Control unit 220 controls multiplexer 210 .
- Transmitter/receiver 140 transmits the output of multiplexer 210 .
- gyroscope 120 is a rotating member continues to turn about a fixed spin axis as long as no forces are exerted on the member and the member is not accelerated.
- Gyro attitude transducers (free gyros) are used as two-degree-of-freedom gyros that can provide an output for the pen's three attitude planes: pitch, yaw, and roll (or x, y, and z axes).
- Rate gyros are attitude-rate transducers that provide an output signal proportioned to angular velocity (time rate of change of attitude). Data from gyroscopes 120 is transmitted by transmitter/receiver 140 to base unit 160 .
- Strain gauges 100 determine whether pressure is being put on pen tip 180 . Thus, if the user is writing on paper 190 , strain gauges 100 register the pressure to indicate that a stroke is being made. Otherwise, strain gauges 100 indicate that no stroke is being made and position information is not recorded. The stroke can then be processed and recorded either in base unit 160 or in pen 10 .
- accelerometers may be used instead of strain gauges.
- the accelerometers monitor acceleration of the tip of the pen, as opposed to the pressure on the tip of the pen. In fact, using the accelerometers does not require the pen tip to touching anything, thereby eliminating any need for pressure sensing.
- three gyros and three accelerometers are used to determine when strokes are being made by a user.
- Multiplexer 210 selectively couples outputs of fine position sensors 170 , gyroscopes 120 , or strain gauges 100 to transmitter/receiver 140 in response to signals generated by control unit 220 .
- Control unit 220 generates control signals to alternate the coupling of the sensors to transmitter/receiver 140 such that data from the sensors is transmitted by transmitter/receiver 140 .
- Transmitter/receiver 140 transmits data output by multiplexer 210 , which is received by base unit 160 .
- Base unit 160 processes the strike data and establishes a communications link to send the data to be faxed.
- FIG. 3 is a block diagram of one embodiment of base unit 160 according to the present invention.
- base unit 160 comprises receiver 300 coupled to demultiplexer 310 , which channels data from receiver 300 to either pressure data conditioner 320 or position data conditioner 330 , in the appropriate manner.
- the outputs of pressure data conditioner 320 and position data conditioner 330 are coupled to multiplexer 340 , which selects an input to be coupled to processor 350 .
- Control unit 380 generates signals to control demultiplexer 310 and multiplexer 340 .
- Memory 360 is also coupled to processor 350 .
- Receiver 300 receives signals from transmitter/receiver 140 in pen 10 .
- Receiver 300 is selectively coupled to pressure data conditioner 320 and to position data conditioner 330 by demultiplexer 310 , such that data from strain gauges 100 are transferred to pressure data conditioner 320 and data from gyroscopes 120 and fine position sensors 170 are transferred to position data conditioner 330 at appropriate times.
- Processor 350 receives and processes data from pressure data conditioner 320 and position data conditioner 330 .
- Processor 350 processes the data received to generate a data stream to communicate the message written on paper 190 to a designated party via communications link 370 .
- Processor 350 accesses memory 360 to process pressure data and position data. In this manner, pen 10 allows a user to write a message on an ordinary piece of paper (or other surface) that is then sent via a fax protocol to a designated recipient.
- demultiplexer 310 may be a portion of receiver 300 or of processor 350 .
- pressure data conditioner 320 is replaced by an acceleration data conditioner.
- some of the elements may be a portion of receiver 300 , while others are a portion of processor 350 .
- base unit 160 may provide handwriting recognition and some of the components in FIG. 3 may be part of pen 10 .
- FIG. 4 illustrates the use of an alternative embodiment in which base unit 160 is equipped with an infrared (IR) detector that detects the movement of pen 10 .
- pen 10 does not contain gyroscope 120 , fine position sensors 170 or strain gauges 100 .
- the position of pen 10 is determined by a plurality of IR radiating scanning sources.
- FIG. 4 shows the geometry of an IR tracking system using three external positions 401 , 411 , and 421 . Each position has a directive scanning beam (receiving or transmitting) 402 , 412 , and 422 associated respectively with positions 401 , 411 , and 421 . Shaded area 430 represents the intersection of the beams and corresponds to the position of pen 10 .
- FIG. 5 is a data flow diagram for the pen-based faxing of the present invention.
- the process of the present invention begins with the motion of the pen being translated into a stroke representation (processing block 501 ).
- the strokes are compared with the current active templates (processing block 502 ).
- One such comparison process is described below in conjunction with FIG. 7 .
- Strokes are then stored until a later time period (processing block 503 ) when a communications link is established and the strokes are rasterized for transmission (processing block 504 ).
- the system of the present invention attempts to make a communication connection to a communication grid (through, for example, wireless, cellular, or RJ11)). Once connected, the system attempts to establish fax (or email or other communication) link to the destination.
- a central service may act as an intermediary (or delivery agent) for the pen. In this case, the pen connects and downloads data to the service, which then forwards the message appropriately.
- a rasterized version of strokes is generated. For each raster line, the present invention checks which strokes cross that line (and where), turn those pixels black, while leaving the others white. Note that in other embodiments, a rasterized version is not required.
- the result of the process is a destination fax (or other electronic link/server), shown as block 505 .
- an initiate command is issued by the user.
- the initiate command may be a template gesture that the user makes with the pen to indicate that a message is to follow.
- the template gesture may be recognized by the pen using standard template matching or other pattern recognition techniques.
- the template gesture may be a standard form, such as writing “TO:”, drawing a predefined graphic, or can be special spatio-temporal gesture adapted or trained to an individual user.
- the system may respond with a sound (e.g., beep) or some other feedback (e.g., light, blinking light, etc.) to indicate that it is in message mode.
- a recipient or destination is specified.
- the destination can be specified as a name template, a name plus a number, or just a number.
- the system stores the name for future template matching. Digits can be recognized by character recognition, or written is a special, easy to decode vocabulary. If the pen system includes a small CCD, recipients may be indicated simply by scanning the appropriate entry in an address book.
- the message is created by recording strokes.
- strokes are recorded until an “END” template is matched.
- a compact representation of the strokes e.g., as coefficients of an oscillator mode
- strokes may be ordered by the Y coordinate to aid future rasterization.
- the pen may be coupled to a telephone (or fax machine).
- the user first dials the destination number and then proceeds to write the message. This method obviates the need for recognizing the “Initiate” commands or the destination number.
- a user may wish to fax a message that they have already written. Assuming that the pen has stored the strokes comprising that message, a user could fax that stored message by issuing the fax command and specifying the stored message. For example, the user might write a unique number at the start of each page. This number would serve as the template for subsequent fax commands and faxing.
- FIG. 6 is a flow diagram for faxing a message with a pen-based faxing system.
- the process starts at processing block 600 , which may be accomplished by supplying power to pen 10 via a power switch, a reset switch or an appropriate command. Alternatively, pen 10 may power itself when touched by a user or when a spoken command is recognized.
- the pen-based faxing system waits for the user to write information about the recipient of the message to be sent.
- This information may include a name, a fax number and any other relevant information. For example, a user may write:
- the pen-based faxing system is able to complete a fax communication and a message may be written. Additionally, the pen-based faxing system may also provide a “speed dialing” function such that the user writes a number such as “4” or other symbol or sequence of symbols (e.g., letters, numbers, indicia, etc.) to recall recipient information corresponding to the designated recipient rather than writing the recipient information.
- a “speed dialing” function such that the user writes a number such as “4” or other symbol or sequence of symbols (e.g., letters, numbers, indicia, etc.) to recall recipient information corresponding to the designated recipient rather than writing the recipient information.
- the pen-based faxing system provides feedback to the user to acknowledge receipt of valid recipient information in processing block 630 . This may be accomplished, for example, by lighting display 150 (or displaying a message on display 150 , whichever is provided), providing a beep or a vocal acknowledgment.
- the user may have a device (e.g., watch, etc.) that is part of the pen-based faxing system that displays a message, beeps, etc. Note that the user feedback is not necessary for all embodiments.
- the pen-based faxing system then waits for an “END” command in processing block 640 to indicate that the message is complete.
- the user writes the message to be sent on a piece of paper or other surface.
- the strokes made by the user between the “TO:” command and the “END” command constitute the message to be sent.
- the strokes for “TO:” are not treated as a command so that it can be used in the body of the message.
- the “END” command is an example where drawing a box around the commands may be useful so that END may be used in the message.
- “STOP”, “FAX”, “SEND” or other command may be used in place of “END” to indicate the conclusion of the message.
- a button (not shown in FIG. 1) may be clicked or double clicked to indicate that the message should be sent.
- the pen may include other manual devices to perform the same function.
- the pen-based faxing system Prior to the “END” command, the pen-based faxing system monitors the strokes being made for a “CANCEL” command that indicates that the user wishes to abandon the message being written. This is indicated by processing block 650 .
- “CANCEL” may be replaced by such words as “NO”, “ABORT”, “UNDO”, etc., or by manipulating manually a device (e.g., button) on the pen.
- the pen-based faxing system stores and processes message information from the strokes made by the user in processing block 660 . This storing and processing my be accomplished in pen 10 or in base unit 160 , or in some combination of these elements.
- the pen-based faxing system may also provide a stored message function in much the same that a speed dialing function may be provided where a user writes a number or a code of a message that is sent to the designated recipient. The message is then retrieved from memory either in pen 10 or base unit 160 and sent without requiring the user to write out the complete message again.
- a communications link is established in processing block 670 . This may be accomplished, for example, via a wireless modem in either pen 10 or base unit 160 , or via a telephone line or an electronic mail interface or any other communications link capable of transmitting data.
- the message is then transmitted via the communications link in processing block 680 .
- feedback is provided to the user in processing block 690 .
- This feedback may be provided via the methods described with respect to acknowledgment of the recipient information in processing block 630 or by other methods.
- the pen-based faxing system returns to processing block 600 in which it waits for a “TO:” or equivalent command.
- FIG. 7 illustrates an example fax document with both the start (TO:) and stop (END) commands.
- FIG. 8 is a flow diagram for using a pen-based faxing system.
- the user activates the pen-based faxing system. This may be accomplished, for example, by supplying power to the system or by clicking a button (not shown in FIG. 1) on either pen 10 or a button (not shown in FIG. 1) on base unit 160 . Alternatively, power may be automatically supplied when a user touches pen 10 or speaks a predetermined voice command.
- the user After the pen-based faxing system is initiated, the user writes a “TO:” or equivalent command in step 810 . The user then writes the necessary recipient information, such as a name and a fax number in step 820 . After receiving confirmation of the recipient information in step 830 , the user is ready to write the message to be faxed.
- step 840 the user writes the message to be faxed. Any time during steps 800 - 840 , the user may write a “CANCEL” or equivalent command to abort sending the message. For simplicity, the cancellation step has not been included in FIG. 8 .
- the user After the message to be sent has been written, the user writes an “END” or equivalent command in step 850 .
- the pen-based faxing system provides feedback to the user to indicate whether the message has been sent successfully; however, the user is not required to wait for this feedback before engaging in other activities. In one embodiment, this feedback is not provided.
- FIG. 9 is a flow diagram of one embodiment for processing strokes of a pen-based faxing device according to the present invention.
- strokes made by a user are stored as curves and indexed by two lists, MINY and MAXY.
- Strokes in MINY are sorted by the minimum y, or vertical, value of the stroke.
- Strokes in MAXY are sorted by maximum y, or vertical, value of the stroke.
- alternative methods may also be used, such as handwriting recognition.
- step 900 the processing method is started. This may occur, for example, when the user writes an “END” command or double clicks a button on pen 10 . Strokes may also be processed more often to reduce processing time between the time the “END” command is written and the time the fax is sent.
- step 905 variables used to process stroke data are initialized. Thus, IL, IH and LINE are set to 0.
- step 910 the variable LINE 13 BUFFER is cleared so that a new line may be processed.
- the variable LINE is incremented to begin processing the next line and the variable il is set equal to IL to process the first stroke that has not been fully processed.
- both il and IL are equal to zero; however, once the line at the maximum Y value of a stroke is reached, the variable IL is incremented. Incrementing IL has the effect of skipping the processing of a stroke. Because strokes are ordered by minimum Y value in MINY, incrementing IL when the maximum Y value of a stroke is reached eliminates the stroke from future processing. Thus, processing power may be focused on the remaining strokes rather than the full set of strokes.
- a temporary variable s is assigned the stroke to be processed.
- s indicates the stroke having the lowest Y value.
- step 920 the selected stroke indicated by s is evaluated to determine whether the minimum Y value of that stroke is less than or equal to the line being processed. If not, the variable LINE 13 BUFFER is transmitted. Thus, if the stroke with the lowest Y value does not intersect the line processed, no stroke intersects the line and that information is transmitted in LINE 13 BUFFER.
- Step 925 is performed only if the result from step 920 is affirmative. Step 925 determines whether the maximum Y value of the stroke indicated by s is greater than the line processed. If so, the stroke intersects the line and possibly other lines, so processing of the stroke is not complete. If not, processing of the stroke is complete and IL can be incremented.
- step 940 X is set to the intersection of the stroke indicated by s and the line processed.
- the variable X corresponds to the horizontal position of the stroke.
- the entry in LINE 13 BUFFER corresponding to the Y value of the stroke is assigned X to indicate the horizontal position of the stroke.
- the position of the stroke in two dimensions i.e., X and Y, or horizontal and vertical is stored in LINE 13 BUFFER.
- step 955 the variable il is incremented to index the next stroke in MINY.
- the variable il is incremented to index the next stroke in MINY.
- step 960 After il is incremented it is compared to the number of strokes to be processed in step 960 . If il is greater than the number of strokes, all of the strokes have been processed and LINE 13 BUFFER is transmitted in step 925 . If il is not greater than the number of strokes, steps 915 to 955 are repeated for the next stroke in MINY.
- the pen-based faxing system determines whether the current line is greater than the number of lines on the page in step 965 . If so, processing ends in step 975 .
- the system determines whether IL is greater than the number of strokes. If so, all of the strokes have been processed and processing stops in step 975 . If not, steps 910 to 970 are performed for the next line.
- the present invention provides a number of advantageous features.
- the present invention allows users to write messages as they normally do, on paper in their own handwriting.
- the present invention also does not require a user to learn how to work a new device or applications program.
- Destination recognition could also use template matching for numbers and/or names. Names could be matched against previous entries by a user. Much work has gone into handwritten digit recognition, and templates from existing systems could be used. If the pen includes a CCD, the destination might be scanned as a barcode from a printed address book.
- pattern recognition techniques could be used, such as neural networks, hidden markov models, etc.
- system could adapt to a particular user. In any case, the very small vocabulary and strong context dependence should lead to very good recognition rates even with somewhat simplistic recognition techniques.
- the present invention is also different from conventional fax machines in that no paper scanner is needed. Also there is no need to dial, feed paper, or perform any other action once message is written. Still further, faxes to be sent can be stored in a queue until communications link can be established. Stroke representation are much more compact than raster representations, thus less memory is required to store the fax. Moreover, the compact nature of the pen makes it eminently portable paper is no necessary, any surface will do.
- the present invention also differs from personal computer (PC) or personal digital assistant (PDA) applications in that there is no application program and users do not navigate a window system or click on any buttons. Also general handwriting recognition is not necessary (only some simple template matching which is much easier). Message information is stored more compactly as strokes and rasterized on the fly in the present invention as opposed to PC or PDA applications. Any surface can be used in the present invention, and the writing area not limited to size of screen. Lastly, a hardcopy is available as the user writes the message.
- PC personal computer
- PDA personal digital assistant
- the present invention could also serve additional functions.
- existing documents or objects could be faxed by “tracing” them with the pen.
- Simple “todo” messages could be sent to oneself. While on a trip, an individual might scribble messages to serve as reminders upon returning home, where they would be waiting on one's desktop.
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- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Facsimiles In General (AREA)
- Facsimile Transmission Control (AREA)
- User Interface Of Digital Computer (AREA)
- Position Input By Displaying (AREA)
- Facsimile Scanning Arrangements (AREA)
- Character Discrimination (AREA)
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US08/940,832 US6201903B1 (en) | 1997-09-30 | 1997-09-30 | Method and apparatus for pen-based faxing |
JP27865598A JP3993706B2 (en) | 1997-09-30 | 1998-09-30 | Facsimile transmitter |
JP2005030916A JP2005216318A (en) | 1997-09-30 | 2005-02-07 | Pen-shaped device and information processing method |
Applications Claiming Priority (1)
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US08/940,832 US6201903B1 (en) | 1997-09-30 | 1997-09-30 | Method and apparatus for pen-based faxing |
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US6201903B1 true US6201903B1 (en) | 2001-03-13 |
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US08/940,832 Expired - Lifetime US6201903B1 (en) | 1997-09-30 | 1997-09-30 | Method and apparatus for pen-based faxing |
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US (1) | US6201903B1 (en) |
JP (2) | JP3993706B2 (en) |
Cited By (77)
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Also Published As
Publication number | Publication date |
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JP3993706B2 (en) | 2007-10-17 |
JP2005216318A (en) | 2005-08-11 |
JPH11164074A (en) | 1999-06-18 |
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